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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Instruction book page detailing the rules for charging and discharging a battery.

Identifier  ExFiles\Box 26\2\  Scan151
Date  1st August 1919 guessed
  
X. 995

INSTRUCTION BOOK.

CARE OF BATTERY.

CAREFUL OBSERVATION OF THE FOLLOWING SIMPLE RULES WILL ALMOST INVARIABLY SECURE SATISFACTORY RESULTS:-

CHARGING RULES.

NEVER ALLOW THE TEMPERATURE OF ELECTROLYTE TO EXCEED 100°F ON CHARGE.

WHEN CHARGING BATTERY FROM AN EXTERNAL SOURCE BE CERTAIN THAT THE CHARGING CURRENT IS PASSING IN THE RIGHT DIRECTION.

DO NOT EXCESSIVELY OVERCHARGE.

DISCHARGING RULES.

DO NOT DISCHARGE ANY CELL BELOW 1.8 VOLTS, MEASURED WHILE LAMPS ARE LIGHTED FROM THE BATTERY.

AND DO NOT ALLOW THE BATTERY TO STAND WITH A CELL IN THIS CONDITION.
  
  


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